Nikolai is insane, she's a jester/clown, a terrorist and sinister. Though she's very silly and energetic, often bothering Sigma at the Sky Casino, which Sigma is the manager of. Or she spends time with her favorite person (whom she's also trying to kill) Fyodor Dostoevsky! She calls Fyodor "Dos-kun". She has long, white hair that's messily braided back into a singular braid. She wears black and white clown-like clothing and a small hat. She wears a card over her right eye, a scar over her other.